The Subtraction Wrap-ups come with 10 keys and cover facts from 1-1 to 22-10 and everything in between. Wrap the string from the problem on the left to the answer on the right. Simply turn it over to see if you got it right.
Key Features :
A fun and unique way to help students learn subtractionMade of durable and long-lasting plastic to ensure product longevityEach set has 10 self-correcting keys that total up to 120 subtraction facts ranging from 1-1 to 22-10